Simple metal shelving might do the trick and be easily removed if I ever decide to make the one closet be for clothing, rather than food storage.

Hah. Like that would happen.

I've also been cruising the Craigslist options for clothing storage. I need some place to put my clothes, I suppose, so I've been hoping to find a squat cupboard or dresser that will hold everything. I may resort to boxes for my clothes, because I really have to get my jars out from underfoot soon!